CN109677382A - A kind of commercial vehicle electronic parking system having failure automatic braking function - Google Patents
A kind of commercial vehicle electronic parking system having failure automatic braking function Download PDFInfo
- Publication number
- CN109677382A CN109677382A CN201910129640.5A CN201910129640A CN109677382A CN 109677382 A CN109677382 A CN 109677382A CN 201910129640 A CN201910129640 A CN 201910129640A CN 109677382 A CN109677382 A CN 109677382A
- Authority
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- China
- Prior art keywords
- valve
- solenoid valve
- parking
- muffler
- bit triplet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/70—Electrical control in fluid-pressure brake systems by fluid-controlled switches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of commercial vehicle electronic parking systems for having failure automatic braking function, it is related to commercial vehicle braking technology field, system includes air accumulator 1, throttle muffler 2, two-bit triplet solenoid valve 3, electronic control unit 4,2/2-way solenoid valve 5, relay valve 6, pressure sensor 7, muffler 8, brake chamber 9, system can be exhausted or be inflated by the combinative movement of valve when normal use, to make vehicle parking or release；When disconnection fault occurs, system can automatically cut off gas source, and the indoor pressure slow release of parking braking gas is made the steady ramp to stop of vehicle by throttle style.Guarantee under the premise of normally realizing convenient parking, when parking can prevent car slipping；When driving system failure, it still is able to safety, smoothly implements parking.
Description
Technical field
The present invention relates to commercial vehicle braking technology fields, more particularly to a kind of commercialization for having failure automatic braking function
Vehicle electronic parking system.
Background technique
With the development of automotive electronic technology, application of the electronic parking on passenger car has reached its maturity, still, relative to
Commonly used on passenger car, application of the electronic parking in commercial vehicle is still in infancy, and is especially applied to air pressure system
The electronic parking of dynamic system.Electronic parking is opposite with traditional parking system, have the advantages that it is easy to operate, laborsaving, if matched
Close suitable control technology, additionally it is possible to realize the traditional manual parking hill start auxiliary that cannot achieve, parking of meeting an urgent need, prevent slipping by slope
Function is with a wide range of applications.
Chinese invention patent application (application number: 201611201737.5, publication date: on 03 22nd, 2017) use one
Two-bit triplet and a 2/2-way valve group are closed, and system parking braking control sensitivity is high, structure is simple, but the system is powering off
After can not implement parking, solenoid valve powers off suddenly when driving is difficult to maintain current brake state, and system may brake suddenly, exist
Security risk；When parking, if solenoid valve occurs to leak will lead to slip by slope, to reduce the reliability and security of system.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of commercializations for having failure automatic braking function
Vehicle electronic parking system can be exhausted or be inflated to system by the combinative movement of valve when system is normal, to make vehicle
Parking or release；When disconnection fault occurs, system can automatically cut off gas source, and by throttle style that parking braking gas is indoor
Pressure slow release makes the steady ramp to stop of vehicle.Guarantee under the premise of normally realizing convenient parking, when parking can prevent from slipping
Vehicle；When driving system failure, it still is able to safety, smoothly implements parking.
The technical scheme adopted by the invention is that: a kind of commercial vehicle electronic parking system having failure automatic braking function
System, including air accumulator 1, throttle muffler 2, two-bit triplet solenoid valve 3, electronic control unit 4,2/2-way solenoid valve 5, relay valve 6,
Pressure sensor 7, muffler 8, brake chamber 9, air accumulator 1 successively with two-bit triplet solenoid valve 3,2/2-way solenoid valve 5, disappear
Sound device 8 and relay valve 6 are connected, and the exhaust outlet R of two-bit triplet solenoid valve is connected with throttle muffler 2, and throttle muffler 2 is opened
Degree is adjusted according to vehicle；The control mouth of relay valve 6 is connected with the gas outlet A of two-bit triplet solenoid valve, and pressure sensor 7 is pacified
At the gas outlet of relay valve 6, the gas outlet of relay valve 6 is connected with the spring braking chamber of brake chamber 9；Two-bit triplet electromagnetism
Valve 3,2/2-way solenoid valve 5 and pressure sensor 7 are connect with electronic control unit 4.As an improvement, the system can also be equipped with peace
The manual-operating mechanism of full backup is located on two-position three-way valve and 2/2-way electromagnetic valve body, be manually operable and from
It is dynamic to reset, for manually controlling spool movement, braked and released braking.
Compared with prior art, the beneficial effects of the present invention are:
1) highly-safe system design has an adjustable throttling, when driving, if system powers off suddenly, two-bit triplet solenoid valve into
Port is closed, and the pressure of throttle muffler control relay valve control chamber is slowly discharged, and so that vehicle automatic retarding is stopped, be can avoid system
Unexpected switch of dynamic state and jeopardize traffic safety；When parking, if two-bit triplet solenoid valve leaks, leak into compression it is empty
Gas can directly arrange Xiang great Qi by throttle muffler, avoid pressure accumulated car slipping when causing parking；Exhaust can also be reduced simultaneously to make an uproar
Sound prevents dust from entering system, improves system durability.
2) the good system of controllability uses two directly operated type high-speed switch valves, can accurately be controlled using high-speed switch valve
Brake pressure realizes the advanced braking functions such as dynamic brake, anti-lock auxiliary.
3) there is carrying out safety backup two-position three-way valve and 2/2-way solenoid valve to be designed with manual-operating mechanism, works as system
When power-off can not drive, braking can be braked and be released by operating hand push button, thus ensure that the safety of vehicle,
It can be convenient and safeguarded.
Detailed description of the invention
Fig. 1 is automatic parking state diagram under electronic parking system failure mode provided by the invention；
Fig. 2 is that electronic parking system provided by the invention releases parked state figure；
Fig. 3 is parked state figure under electronic parking system normal mode provided by the invention；
In figure, solid line connection type is air circuit connection；Dotted line connection type is circuit connection；1 air accumulator, 2 throttle mufflers,
3 two-bit triplet solenoid valves, 4 electronic control unit, 5 2/2-way solenoid valves, 6 relay valves, 7 pressure sensors, 8 mufflers, 9
Brake chamber.A two-bit triplet electromagnetism valve air gate, P two-bit triplet electromagnetic valve air inlet, R two-bit triplet solenoid valve vents
Mouthful.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached in embodiment
Figure, technical scheme in the embodiment of the invention is clearly and completely described.
Have the commercial vehicle electronic parking system of failure automatic braking function, including air accumulator as shown in Fig. 1,2,3
1, throttle muffler 2, two-bit triplet solenoid valve 3, electronic control unit 4,2/2-way solenoid valve 5, relay valve 6, pressure sensor 7,
Muffler 8, brake chamber 9；It is inflated and is vented using 3 control system of two-bit triplet solenoid valve, and corresponding releasing parking and parking；
2/2-way solenoid valve 5 is used for Quick air-discharge；2 exhaust velocity of throttle muffler is controllable, is used for ventilation in slow speed；Pressure sensor
7 for detecting brake chamber pressure；Air accumulator 1 successively with two-bit triplet solenoid valve 3,2/2-way solenoid valve 5, muffler 8 with
And relay valve 6 is connected, the exhaust outlet R of two-bit triplet solenoid valve is connected with throttle muffler 2, the aperture of throttle muffler 2 according to
Vehicle is adjusted；The control mouth of relay valve 6 is connected with the gas outlet A of two-bit triplet solenoid valve, pressure sensor 7 be mounted on after
At the gas outlet of dynamic valve 6, the gas outlet of relay valve 6 is connected with the spring braking chamber of brake chamber 9；Two-bit triplet solenoid valve 3, two
Two three-way electromagnetic valves 5 of position and pressure sensor 7 are connect with electronic control unit 4；The commercial vehicle electronics for having failure automatic braking function
Parking system is also equipped with manual-operating mechanism on two-position three-way valve and 2/2-way electromagnetic valve body respectively, for carrying out manually
Braking and releasing braking.
Below to a kind of commercial vehicle electronic parking system for having automatic braking function proposed by the invention in different works
Embodiment under condition is illustrated:
1) normal parking first powers off two-bit triplet solenoid valve 3 when vehicle need to enter on-position from driving states,
Under the action of spring force, two-bit triplet solenoid valve 3 resets, and A mouthfuls disconnect and are connected to R mouthfuls with P mouthfuls, and then compressed air is through throttling
Silencer arranges Xiang great Qi, pressure reduction；Meanwhile being powered on to 2/2-way solenoid valve 5, under the action of electromagnetic force, 2/2-way
Solenoid valve is switched to normally open by normally closed, and compressed air is quickly discharged, the control cavity pressure decline of relay valve 6, relay valve master
Valve is opened, and the compressed air in brake chamber is discharged, and braking air chamber push rod releases implementation braking under spring force, such as
Shown in Fig. 3.
) parking is released when electronic parking system carries out releasing parking, two-bit triplet solenoid valve 3 powers on, electromagnetism Vavle switching
It is connected to P mouthfuls with A mouthfuls, R mouthfuls of exhaust outlet are cut off, and control chamber of the compressed air through P mouthfuls of inflow relay valves 6 drives relay valve
Main valve is opened, and then compressed air enters brake chamber 9, under the action of compressed air, brake chamber through the main valve of relay valve 6
Push rod retraction, release parking braking, as shown in Figure 2.
A kind of commercial vehicle electronic parking system having failure automatic braking proposed by the invention, for being braked after power-off
State, which switches suddenly or can not brake and leak, to be led to problems such as to slip by slope, and is especially installed in the exhaust outlet of two-bit triplet solenoid valve
Throttle muffler 2 can realize failure automatic braking using the device and prevent leakage from slipping by slope, as follows in detail:
3) when failure automatic parking is driven a vehicle, when disconnection fault occurs for electronic parking system, two-bit triplet solenoid valve 3 is in spring force
Under the action of reset, be switched to state shown in FIG. 1, A mouthfuls are connected with R mouthfuls, at this time compressed air through throttle muffler 2 slowly arrange
Out, since the aperture of throttle muffler 2 is adjustable, exhaust velocity be may also set up very slow, then the control chamber pressure of relay valve 6
Power slowly reduces, and the pressure in brake chamber also slowly reduces therewith, therefore on the one hand realizes failure automatic parking, meets
" fault-safety principle principle "；On the other hand the unexpected switching of on-position is also avoided, traffic safety accident is caused.
) anti-leak car slipping is when vehicle stops on ramp, if leakage occurs in two-bit triplet solenoid valve, compression is empty
Gas has entered the control chamber of relay valve 6 through air inlet, and compressed air accumulation will make relay valve unlatching that will slip by slope.But it is right
In this system, due to being provided with throttle muffler, the gas for leaking into system directly arranges Xiang great Qi through throttle muffler again, because
The problem of this will not cause stress accumulation, avoid leakage car slipping, improves the safety of system.
) carrying out safety backup manual operation two-position three-way valve and 2/2-way solenoid valve be designed with manual-operating mechanism, when being
It when system power-off can not drive, can be opened or closed by pressing hand push button drive magnetic valve spool, implement braking and release system
It is dynamic, to ensure that the safety of vehicle, it can also easily be debugged and be safeguarded after system cut-off.
Claims (3)
1. a kind of commercial vehicle electronic parking system for having failure automatic braking function, the system comprises air accumulator 1, two three
Three-way electromagnetic valve 3, electronic control unit 4,2/2-way solenoid valve 5, relay valve 6, pressure sensor 7, muffler 8, brake chamber 9, storage
Gas tank 1 is successively connected with two-bit triplet solenoid valve 3,2/2-way solenoid valve 5, muffler 8 and relay valve 6, it is characterised in that:
The system also includes throttle muffler 2, the exhaust outlet R of two-bit triplet solenoid valve is connected with throttle muffler 2；Relay valve 6
Control mouth is connected with the gas outlet A of two-bit triplet solenoid valve, and pressure sensor 7 is mounted at the gas outlet of relay valve 6, relay valve
6 gas outlet is connected with the spring braking chamber of brake chamber 9；Two-bit triplet solenoid valve 3,2/2-way solenoid valve 5 and pressure pass
Sensor 7 is connect with electronic control unit 4.
2. the commercial vehicle electronic parking system according to claim 1 for having failure automatic braking function, it is characterised in that:
The system is equipped with the manual-operating mechanism of carrying out safety backup, is located on two-position three-way valve and 2/2-way electromagnetic valve body,
It is manually operable and automatically resets, for manually controlling spool movement, braked and released braking.
3. the commercial vehicle electronic parking system according to claim 1 or 2 for having failure automatic braking function, feature exist
In: the aperture of the throttle muffler 2 is adjusted according to vehicle, when adjusting automatic parking by adjusting exhaust velocity
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129640.5A CN109677382A (en) | 2019-02-21 | 2019-02-21 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129640.5A CN109677382A (en) | 2019-02-21 | 2019-02-21 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109677382A true CN109677382A (en) | 2019-04-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910129640.5A Pending CN109677382A (en) | 2019-02-21 | 2019-02-21 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126797A (en) * | 2019-05-17 | 2019-08-16 | 浙江万安科技股份有限公司 | A kind of commercial vehicle electric parking brake system anti-lock control method |
| CN110654359A (en) * | 2019-09-30 | 2020-01-07 | 清华大学 | Bridge module, pneumatic line control brake system and control method |
| WO2021099097A1 (en) * | 2019-11-18 | 2021-05-27 | Zf Cv Systems Europe Bv | Brake system with safer emergency stop function and method for same |
| CN112855642A (en) * | 2019-11-28 | 2021-05-28 | 北汽福田汽车股份有限公司 | Electric control valve device, parking system and vehicle |
| CN113104012A (en) * | 2021-04-19 | 2021-07-13 | 眉山中车制动科技股份有限公司 | Parking brake control device |
| CN114761295A (en) * | 2019-12-04 | 2022-07-15 | 采埃孚商用车系统全球有限公司 | Anti-failure valve unit for parking brake function and parking brake valve facility |
| CN115379972A (en) * | 2020-02-07 | 2022-11-22 | 沃尔沃自主解决方案公司 | Braking system for autonomous vehicle |
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| CN209600476U (en) * | 2019-02-21 | 2019-11-08 | 武汉辅安科技有限公司 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126797A (en) * | 2019-05-17 | 2019-08-16 | 浙江万安科技股份有限公司 | A kind of commercial vehicle electric parking brake system anti-lock control method |
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| CN110654359A (en) * | 2019-09-30 | 2020-01-07 | 清华大学 | Bridge module, pneumatic line control brake system and control method |
| WO2021099097A1 (en) * | 2019-11-18 | 2021-05-27 | Zf Cv Systems Europe Bv | Brake system with safer emergency stop function and method for same |
| CN112855642A (en) * | 2019-11-28 | 2021-05-28 | 北汽福田汽车股份有限公司 | Electric control valve device, parking system and vehicle |
| CN114761295A (en) * | 2019-12-04 | 2022-07-15 | 采埃孚商用车系统全球有限公司 | Anti-failure valve unit for parking brake function and parking brake valve facility |
| CN114761295B (en) * | 2019-12-04 | 2024-11-08 | 采埃孚商用车系统全球有限公司 | Failure-preventing valve unit for parking brake function and parking brake valve installation |
| CN115379972A (en) * | 2020-02-07 | 2022-11-22 | 沃尔沃自主解决方案公司 | Braking system for autonomous vehicle |
| CN115379972B (en) * | 2020-02-07 | 2024-10-29 | 沃尔沃自主解决方案公司 | Braking system for autonomous vehicle |
| CN113104012A (en) * | 2021-04-19 | 2021-07-13 | 眉山中车制动科技股份有限公司 | Parking brake control device |
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